Journal
JOURNAL OF VETERINARY MEDICAL SCIENCE
Volume 68, Issue 5, Pages 479-486Publisher
JAPAN SOC VET SCI
DOI: 10.1292/jvms.68.479
Keywords
adipogenesis; myofiber type; sarcopenia; satellite cell; skeletal muscle
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The possible relationship between myofiber type composition and adipose tissue development in skeletal muscle in vivo has been suggested. Recent evidence indicated that satellite cells are multipotent cells that can undergo not only myogenic, but also adipogenic differentiation. In the present study, rat satellite cells were isolated from soleus, back. extensor digitorum longus, tibialis anterior and quadriceps muscles, and their adipogenic potentials were compared by culturing them under adipogenic conditions in vitro. Cells from soleus muscle exhibited the highest adipogenic potential as judged from Oil Red-staining and immunocytochemical C/EBP alpha-staining. The adipogenic potential of satellite cells was positively correlated with type I myofiber distribution in the corresponding muscle of origin. These results demonstrated that the adipogenic potential of satellite cells differs according to the muscle of origin and suggested that its possible correlation to type I myofiber distribution may account for preferential adipose tissue development in slow oxidative muscles.
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